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VMAX XTR34-75 AGM Battery vs VMAXTANKS SLR125 AGM Battery

Buy the VMAXTANKS SLR125 if you need long runtime: 125Ah, 260 minutes of reserve capacity and 1.7 kWh give it roughly two-thirds more usable energy than the XTR34-75. Buy the VMAX XTR34-75 if space is tight or you need a Group 34 battery that fits an existing tray, and you value its 1100A hot cranking amps for engine starting. Both are sealed AGM deep-cycle batteries with screw terminals and solid owner feedback; the SLR125 is the stronger deep-cycle bank battery, the XTR34-75 the more compact dual-purpose one.

  • Choose the VMAX XTR34-75 if your battery box or tray takes a Group 34 size, or you want high cranking amps for starting as well as deep cycling.
  • Choose the VMAXTANKS SLR125 if you are building a solar, off-grid or backup bank and want the most amp-hours and reserve capacity per battery.

Prices

  • VMAX XTR34-75 AGM Battery: $229.99 at bargainshore (last seen Nov 12)
  • VMAXTANKS SLR125 AGM Battery: $279.99 at bargainshore (last seen Nov 12)
  • Difference: the VMAX XTR34-75 AGM Battery is $50.00 cheaper than the VMAXTANKS SLR125 AGM Battery at the latest prices (Nov 12)
VMAX
VMAX XTR34-75 12V 75AH Deep Cycle XTREME AGM Battery

VMAX XTR34-75 AGM Battery

VMAX XTR34-75 12V 75AH Deep Cycle XTREME AGM Battery

5(2 ratings)
$229.99at bargainshoreChecked Nov 12
See all prices and details
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Pros
  • Compact Group 34 case fits many vehicle trays
  • 1100A hot cranking amps for starting
  • 75Ah with 145 minutes reserve capacity
  • Sealed AGM, no water topping up
  • Hex screws included in the box
Cons
  • Roughly 40% less capacity than the SLR125
  • Shorter reserve capacity
  • Warranty terms not stated
VMAXTANKS
VMAXTANKS SLR125 12V 125Ah AGM Deep Cycle Battery

VMAXTANKS SLR125 AGM Battery

VMAXTANKS SLR125 12V 125Ah AGM Deep Cycle Battery

4.9(125 ratings)
$279.99at bargainshoreChecked Nov 12
See all prices and details
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Pros
  • 125Ah and 260 minutes reserve capacity
  • 1.7 kWh of stored energy per battery
  • Group 31 case with 8mm screw terminals
  • Can be wired in series or parallel for larger banks
  • 1-year manufacturer replacement warranty
Cons
  • Bigger and heavier; needs a Group 31 tray
  • Cranking amps not emphasized for engine starting
  • Only a 1-year warranty

What separates them

VMAX XTR34-75 AGM BatteryVMAXTANKS SLR125 AGM Battery
20-hour capacity75Ah125Ah
Reserve capacity145 minutes260 minutes
Stored energyAbout 0.9 kWh (12V x 75Ah)1.7 kWh
Cranking power1100A hot cranking amps, suited to engine startingDeep-cycle focus; cranking amps not emphasized
Group size and footprintGroup 34, compactGroup 31, 13" x 7" x 8.7", larger and heavier
Terminals6mm hex screws included8mm hex screw terminals
WarrantyNot stated in the listing1-year manufacturer replacement warranty
Best useStarting plus moderate deep cycling in tight spacesSolar, wind, off-grid and backup banks

Prices at every store

VMAX XTR34-75 AGM Battery

  • bargainshoreNew

    In stockReturn policy

    $229.99Checked Nov 12
    Visit bargainshore
Prices and history →

VMAXTANKS SLR125 AGM Battery

  • bargainshoreNew

    In stockReturn policy

    $279.99Checked Nov 12
    Visit bargainshore
Prices and history →

Specs compared

SpecVMAX XTR34-75 AGM BatteryVMAXTANKS SLR125 AGM Battery
Voltage12 V12V
Amp Hours75 Ah—
Chemical CompositionAGM—
TypeAGM Deep Cycle Battery—
Battery Size12 V—
ApplicationHigh Drain Devices—
Capacity—125AH
Battery Type—AGM Deep Cycle
Group Size—31
Dimensions—13"L x 7"W x 8.7"h
Terminals—8mm hex screw in terminals
Energy—1.7 kWH

What reviewers say

VMAX XTR34-75 AGM Battery

Owners of VMAX deep-cycle AGM batteries generally report solid runtime on trolling motors and RV house loads and praise the sealed, no-maintenance build. Complaints center on weight and on shortened life when the battery is deeply drained or charged with the wrong equipment.

What people mention
  • RuntimePraisedOwners say it keeps trolling motors and house loads running for long stretches between charges.
  • MaintenancePraisedThe sealed AGM design means no watering and no acid mess.
  • WeightCriticisedBuyers find it heavy and awkward to move into tight battery compartments.
  • ChargingMixedIt performs well with an AGM-compatible charger but underperforms on older flooded-battery chargers.

VMAXTANKS SLR125 AGM Battery

  • 4.9 / 5125 ratings

Rated 4.9 out of 5 across 125 ratings, owners largely report the battery holds up well in solar and RV use. Complaints are few and mostly about weight and the short warranty.

What people mention
  • CapacityPraisedOwners say it delivers the rated 125Ah and keeps solar systems running through the night.
  • BuildPraisedBuyers describe a solid, well-sealed case and tidy screw terminals.
  • WeightCriticisedSeveral note it is heavy and awkward to lift into a battery box alone.

Questions and answers

Which is better for a solar or off-grid setup?
The VMAXTANKS SLR125. Its 125Ah capacity, 260-minute reserve and 1.7 kWh give you far more runtime per battery, and it is built for series or parallel bank wiring.
Which one lasts longer?
Both are AGM deep-cycle batteries and lifespan depends on depth of discharge and charging. The SLR125 carries a stated 1-year replacement warranty; the XTR34-75's warranty is not stated, so the SLR125 is the safer bet on paper.
Can I use the XTR34-75 to start an engine?
Yes. Its 1100A hot cranking amps suit starting duty, and it still deep cycles for accessories. The SLR125 is aimed at deep-cycle storage rather than cranking.
Is the SLR125 worth stepping up to?
If you have room for a Group 31 battery, yes. You get about two-thirds more capacity and reserve capacity for the same 12V system, which means fewer batteries or longer runtime.
Will the SLR125 fit where a Group 34 battery fits?
No. The SLR125 is a Group 31 at 13" x 7" x 8.7" and is larger and heavier. Check your tray and clearance before switching from a Group 34.
Can I connect several of these together?
Yes. Both are 12V AGM batteries and can be wired in series for 24V or parallel for more amp-hours, as long as they are the same model, age and charge level.

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  • WarrantyCriticisedA few wish the replacement warranty ran longer than one year.